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- Master Lock 378DAT Trailer Coupler Lock, 2-5/...
0 ratings
Nº de artículo:
48198506
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch
87% of respondents would recommend this to a friend
Nº de artículo:
48198506
DOP 5265
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from Estados Unidos
En stock
Importado de la tienda USA
QTY:
Solo quedan 10 artículos en stock.
Haz tu pedido ahora y recíbelo por ahí Sunday, Septiembre 27
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The advanced locking mechanism provides resistance to picking and prying.
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What Stands Out
Heavy-Duty Construction
Crafted from solid steel, the Master Lock 378DAT ensures maximum durability and resistance against tampering, providing peace of mind when securing your trailer.
Universal Fit
Designed to fit 2-5/16-inch couplers, this lock offers versatility for various trailers, making it a convenient solution for all your towing needs.
Weather-Resistant
Coated with a protective layer, this lock withstands harsh weather conditions, ensuring long-lasting performance and reliable security throughout all seasons.
Detalles de producto
| Brand Name | Master Lock |
| Manufacturer Part Number | 378DAT |
| OEM Equivalent Part Number | 378DAT |
| Unit Count | 1 Count |
| Manufacturer | Master Lock |
| Number of Packs | 1 |
| UPC | 071649213236 |
| Number of Items | 1 |
| Global Trade Identification Number | 00071649213236 |
| Included Components | Coupler Lock, Two Keys |
| Item Type Name | Coupler Lock |
| Model Number | 378DAT |
| Compatible with Vehicle Type | Trailer |
| Automotive Fit Type | Universal Fit |
| Material Type | Alloy Steel |
| Finish Type | Powder Coated |
| Item Weight | 3.4 pounds (1.54 kg) |
| Brand | Master Lock |
| Vehicle Service Type | Trailer |
| Material | Alloy Steel |
What's in the box
Coupler Lock
Two Keys
Who Should Buy?
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Frequent Towing Users
Ideal for individuals who regularly tow trailers and need a reliable locking mechanism for security.
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Security-Conscious Owners
Perfect for trailer owners who prioritize theft prevention and require a durable lock to protect their property.
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Commercial Fleet Operators
Beneficial for businesses that manage a fleet of trailers, ensuring they are securely locked when not in use.
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Occasional Trailer Users
Not ideal for users who rarely tow, as the investment might outweigh the security benefits needed.
DESCRIPCIÓN DEL PRODUCTO
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Preguntas y respuestas de los clientes
-
Pregunta:
What is the purpose of the Master Lock Trailer Lock?
Respuesta: The Master Lock Trailer Lock is designed to secure your trailer by fastening over the coupler, effectively preventing unauthorized access and theft. This lock fits 2-5/16 inch couplers, making it ideal for a variety of trailers. By using this lock, you add a robust layer of security, especially when leaving your trailer unattended in parking lots, campsites, or storage areas. -
Pregunta:
How does the Master Lock Trailer Coupler Lock work?
Respuesta: The Master Lock Trailer Coupler Lock works by engaging the coupler latch mechanism using a durable shackle. When installed, it prevents the coupler from opening, which keeps your trailer securely attached to the towing vehicle. This straightforward locking mechanism ensures peace of mind during trips and increases the safety of your valuable assets when parked. -
Pregunta:
What materials are used in the construction of the Master Lock Trailer Lock?
Respuesta: The Master Lock Trailer Lock is constructed from heavy-duty materials such as steel, which provides excellent resistance against rust and corrosion. The durability of these materials ensures that the lock can withstand harsh weather conditions and potential tampering, making it ideal for outdoor use, where trailers are often exposed to the elements. -
Pregunta:
Is the Master Lock Trailer Lock suitable for all trailer types?
Respuesta: While the Master Lock Trailer Lock is designed to fit 2-5/16 inch couplers, it is best suited for common trailer types such as utility, boat, and car transport trailers. Always check your trailer’s coupler size before purchasing to ensure a proper fit. This versatility makes it a popular choice among trailer owners looking for dependable security solutions. -
Pregunta:
Can the Master Lock Trailer Lock be used in conjunction with other security measures?
Respuesta: Yes, the Master Lock Trailer Lock can be effectively used alongside other security measures, such as wheel locks and alarm systems. By creating multiple layers of security, you enhance the protection of your trailer. This combination of locks makes it more difficult for potential thieves, deterring theft and increasing the overall security of your assets. -
Pregunta:
How should I maintain my Master Lock Trailer Lock?
Respuesta: To ensure optimal performance, regularly inspect your Master Lock Trailer Lock for signs of wear or corrosion. Applying a silicone-based lubricant to the keyhole can help prevent sticking and jamming. Maintenance is especially important if your lock is frequently exposed to moisture, as it can extend the lock's lifespan and maintain its functionality through various weather conditions. -
Pregunta:
What size trailers does the Master Lock Trailer Coupler Lock fit?
Respuesta: The Master Lock Trailer Coupler Lock is specifically designed to fit trailers with 2-5/16 inch couplers. This sizing accommodates a wide range of standard trailers, allowing it to secure various types effectively. Always ensure your trailer’s coupler matches this size for maximum security and an ideal fit. -
Pregunta:
Why is the Master Lock Trailer Lock a good investment for my trailer security?
Respuesta: Investing in the Master Lock Trailer Lock is worthwhile due to its robust build quality and reliability in preventing theft. It is a cost-effective security solution that offers peace of mind when leaving your trailer unattended. Whether you're at a trailer park, campsite, or at home, employing this lock could save you from potential loss and the hassle of dealing with theft. -
Pregunta:
Where can I buy the Master Lock Trailer Lock in Dominican Republic?
Respuesta: You can buy the Master Lock Trailer Lock from Ubuy in Dominican Republic. Ubuy offers a convenient online shopping experience, allowing you to purchase this essential security device easily. With a variety of options available, you can find the right fit for your trailer, ensuring optimal protection against theft. -
Pregunta:
What are the dimensions of the Master Lock Trailer Coupler Lock?
Respuesta: The dimensions of the Master Lock Trailer Coupler Lock vary slightly depending on the model, but it typically has a shackle diameter that is designed to fit snugly within 2-5/16 inch coupler openings. Its compact size is intended for easy storage and portability, making it a convenient addition to your trailer accessories. Always check the specific model for precise measurements.
Master Lock Hitch Locks 378DAT Editorial Review
Master Lock 378DAT Trailer Coupler Lock, 2-5/16-Inch offers a reliable and simple security solution for trailers, designed specifically to fit a 2-5/16 inch ball size. Users appreciate the ease of installation and solid construction, which seems to provide a good deterrent against theft. Many reviews highlight that the lock is effective for locking RV trailers securely, with some customers noting that it fits perfectly and enhances peace of mind when traveling or storing their trailers. Despite some concerns about its perceived weight and construction material, the general consensus is that it performs its job well, underscoring its purpose as a practical trailer locking device.
Customer Reviews & Ratings
960 valoraciones de los clientes
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5 estrella
71%
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4 estrella
12%
-
3 estrella
6%
-
2 estrella
2%
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1 estrella
9%
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ventajas
- Specifically designed for 2-5/16 inch balls
- Easy to install and remove with key
- Effective deterrent against potential theft
- Solid construction that adds security
- Provides peace of mind for trailer owners
Contras
- Some users find it a bit heavy for handling
Platform Trust & Buyer Confidence
JK
Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
AG
Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
H
Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
AC
Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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Información importante
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DOP 5265
Haz tu pedido ahora y recíbelo por ahí Sunday, Septiembre 27
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Solo quedan 10 artículos en stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
características y beneficios
- Advanced locking mechanism for superior security.
- Resistant to rust and corrosion for long-lasting durability.
- Fits most trailer couplers: 1-7/8 in., 2 in., and 2-5/16 in.
- Perfect for use with Straight Tongue Trailer Couplers.
- Lifetime Guarantee for peace of mind.
- Includes one lock and two keys for convenience.
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Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.